SkPDF: stop setting SkPaint::kStrokeAndFill_Style

  * fakebold goes to text-as-path codepath
  * text-as-path gets smarter about bitmap fonts (emoji).
  * text-as-path emits transparent text (avoids infinite loops by
    fixing perspective CTM if needed).

Change-Id: Ic6e97e3d131644e1fd20122b6866e0c9899699d2
Reviewed-on: https://skia-review.googlesource.com/158041
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Auto-Submit: Hal Canary <halcanary@google.com>
2 files changed